package demo3;

public class KeyBoard implements Usb{
    @Override
    public void openDevice() {
        System.out.println("键盘开启");
    }

    @Override
    public void offDevice() {
        System.out.println("键盘关闭");
    }

    public void inPut(){
        System.out.println("输入键盘");
    }
}
